TW200639801A - Low-complexity code excited linear prediction encoding - Google Patents

Low-complexity code excited linear prediction encoding

Info

Publication number
TW200639801A
TW200639801A TW094144472A TW94144472A TW200639801A TW 200639801 A TW200639801 A TW 200639801A TW 094144472 A TW094144472 A TW 094144472A TW 94144472 A TW94144472 A TW 94144472A TW 200639801 A TW200639801 A TW 200639801A
Authority
TW
Taiwan
Prior art keywords
signals
signal
low
excitation signals
linear prediction
Prior art date
Application number
TW094144472A
Other languages
Chinese (zh)
Inventor
Anisse Taleb
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of TW200639801A publication Critical patent/TW200639801A/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G10L19/107—Sparse pulse excitation, e.g. by using algebraic codebook

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

Information (km) about excitation signals of a first signal (sm(n)) encoded by CELP is used to derive a limited set (10') of candidate excitation signals for a second correlated second signal (ss(n)). Preferably, pulse locations of the excitation signals of the first encoded signal (sm(n)) are used for determining the set (10') of candidate excitation signals. More preferably, the pulse locations of the set of candidate excitation signals are positioned in the vicinity of the pulse locations of the excitation signals of the first encoded signal (sm(n)). The first and second signals (sm(n), ss(n)) may be multi-channel signals of a common speech or audio signal. However, the first and second signals (sm(n), ss(n)) may also be identical, whereby the coding of the second signal (ss(n)) can be utilized for re-encoding at a lower bit rate.
TW094144472A 2005-03-09 2005-12-15 Low-complexity code excited linear prediction encoding TW200639801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2005/000349 WO2006096099A1 (en) 2005-03-09 2005-03-09 Low-complexity code excited linear prediction encoding

Publications (1)

Publication Number Publication Date
TW200639801A true TW200639801A (en) 2006-11-16

Family

ID=36953623

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094144472A TW200639801A (en) 2005-03-09 2005-12-15 Low-complexity code excited linear prediction encoding

Country Status (8)

Country Link
EP (1) EP1859441B1 (en)
JP (1) JP5174651B2 (en)
KR (1) KR101235425B1 (en)
CN (1) CN101138022B (en)
AT (1) ATE513290T1 (en)
BR (1) BRPI0520115B1 (en)
TW (1) TW200639801A (en)
WO (1) WO2006096099A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2827327B1 (en) 2007-04-29 2020-07-29 Huawei Technologies Co., Ltd. Method for Excitation Pulse Coding
CN102299760B (en) 2010-06-24 2014-03-12 华为技术有限公司 Pulse coding and decoding method and pulse codec

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3139602B2 (en) * 1995-03-24 2001-03-05 日本電信電話株式会社 Acoustic signal encoding method and decoding method
JPH1097295A (en) * 1996-09-24 1998-04-14 Nippon Telegr & Teleph Corp <Ntt> Coding method and decoding method of acoustic signal
JP3622365B2 (en) * 1996-09-26 2005-02-23 ヤマハ株式会社 Voice encoding transmission system
US7024355B2 (en) * 1997-01-27 2006-04-04 Nec Corporation Speech coder/decoder
JP3329216B2 (en) * 1997-01-27 2002-09-30 日本電気株式会社 Audio encoding device and audio decoding device
JP3063668B2 (en) * 1997-04-04 2000-07-12 日本電気株式会社 Voice encoding device and decoding device
JP3134817B2 (en) * 1997-07-11 2001-02-13 日本電気株式会社 Audio encoding / decoding device
US6161086A (en) * 1997-07-29 2000-12-12 Texas Instruments Incorporated Low-complexity speech coding with backward and inverse filtered target matching and a tree structured mutitap adaptive codebook search
SE521225C2 (en) * 1998-09-16 2003-10-14 Ericsson Telefon Ab L M Method and apparatus for CELP encoding / decoding
JP3343082B2 (en) * 1998-10-27 2002-11-11 松下電器産業株式会社 CELP speech encoder
US6539349B1 (en) * 2000-02-15 2003-03-25 Lucent Technologies Inc. Constraining pulse positions in CELP vocoding
JP2004302259A (en) * 2003-03-31 2004-10-28 Matsushita Electric Ind Co Ltd Hierarchical encoding method and hierarchical decoding method for sound signal

Also Published As

Publication number Publication date
ATE513290T1 (en) 2011-07-15
BRPI0520115A2 (en) 2009-09-15
CN101138022B (en) 2011-08-10
CN101138022A (en) 2008-03-05
KR20070116869A (en) 2007-12-11
EP1859441A1 (en) 2007-11-28
KR101235425B1 (en) 2013-02-20
JP2008533522A (en) 2008-08-21
WO2006096099A1 (en) 2006-09-14
EP1859441B1 (en) 2011-06-15
BRPI0520115B1 (en) 2018-07-17
JP5174651B2 (en) 2013-04-03

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